Chair-back-bending press.



No. 555,153. Patented luly 3|, I900; F. HAYES.

CHAIR BACK BENDING PRESS.

(Application filed. Dec. 23, 1898.)

(No Model.) Q 2 Sheets -Sheet l.

wii'rwsseys. Y4 In venfor.

Tu: NORRIS PETERS ca, PnoYo-Lmia. wxsmuown n c No. 655,l53. Patented July 3|, I900. F. HAYES.

GHAIR' BACK BENDING PRESS:

(Application flleddhc. 98, 1898.)

(No Model.) 2 Sheets-Shea! 2,

mira e STATES PATENT? OFFICE.

FRANK HAYES, or WEST SUPERIOR, WISCONSIN, ASSIGNOR on ONE-HALF TO THE WEBSTER MANUFACTURING COMPANY, OF SOUTH SUPERIOR,

WISCONSIN.

cHAm-e cK-B Nome PRESS.

srticrrroArron forming Orr-Gear Patent No. 655,153, dated 31115 31, 1900.- Application filed December 23,1898. Serial No. 700,268. (No model.)

To all whom it may concern.-

Be it known that I, FRANK HAYES, a citizen of the United States, residing at West Superior, in the county of Douglas and State'of Wisconsin, have invented certain new and useful Improvements in Ohair-Back-Bending Presses; and I do hereby declare the follow mg to be a full, clear, and exactdescr'iption.

of the invention, which willenable'others skilled in the art to which it appertains to The object of this invention is to provide a machine of large capacity forbending or compressing wood stock, such as "chair-backs, which after being bent is to retain its form.

This is accomplished by placing in one frame several beds or forms, one above the other, so connected that they may be operated by one Working mechanism and allow the stock to be placed in layers between each two beds.

In order that my invention may be better understood, attention is called to the accompanying drawings, forming part of this specification, and in which- Figure 1 is a side view, partlyin section, on'

the center line of Fig. 2, (the brace 4 is sec tioned at the line a b of Fig. 2,) the beds closed. Fig. 2 is an end view, partly in'sec} tion, on the center line of frame 1 of Fig. 1; Fig. 3 is an end view of the machine looking from the right of Fig. l and with frame 2 of Fig. 1 removed; also, the crank 10 and arm 26 27 of that endremoved, Fig. 4 is a side view of bearing'l; Fig; 5 is a section on line 0 d of Fig. 3, and Fig. 6 is an enlarged view in section of the curved steam-joint 45 of Fig. 1."

Inall the above views corresponding parts are designated by like numerals of reference.

Generally speaking, the frame of the machine consists of the two end frames 1 2, each preferably made up of two vertical hollow a metal castings, which may be braced together by the side frames 3 3.

Each frame 1 2 is preferably made in two parts, which are connected together neartheir lower ends by means of the rods 3 and at their upper eX-.

tremities by means of the webs or flanges 4 and 5. The upper portions of the frames are strengthened by heavy ribs 1 1, preferably formed integrally therewith. The inner faces of the upright framesare slotted, as shown at 8, Figs-l and 5.

At the upper extremities of the side frames are the bearing-boxes 6 6, covered by heavy caps 6 6, which may be secured in place by means of bolts 7 7. The bearings 6 6 support a horizontal shaft 9, at each end of which is a crank-disk 10 10'. Between the bearings is secured a worm-wheel 11, which meshes with aworm12 on the shaft 13, the latter being .journaled in its boxes 14, 14:, and 14" at right angles to the shaft 9.

On the shaft 13, between the Worm and the bearings 14; and 14', are the sleeves 13 13, which are not secured to the shaft, but are mounted loosely thereon and free to turn between theworm and the boxes.

Theshaft 13 is driven by a pulley 15 and. friction-clutch 16, the latter of any suitable design. The pulley is loosely mounted upon the shaft, but is directly secured to the clutch. This clutch is operated by means of a lever 17, one extremity of which is secured to the bracket 18 and has its free end attached to the horizontal rod 19. The rod 19 extends across one end of the machine and has at its free extremity a handle 19. The free end of the rod 19 is supported by a leaf-spring 20, which rests upon a pin 21. The spring 20 may be further reinforced by a spiral spring 22. These springs support the free end of the rod 19 and hold it in contact with the periphery of the disk 10. a On the. rod 19 is formed a lug or stop 23, Figs. 2 and 3, and on the periphery Of'th'edi'sk'lO are two similar. stops 24: 24.

Heavy pins 25 are secured to the faces of the crank-disks, and attached to these pins are pitmen, each of which consists of an upth device that the beds 31 32 e3 34 be heated taper j oint,

per piece 26, a lower piece 27, an intermediate rightand left hand screw 28, and a jamnut 29. The screw and jam-nut are provided with holes for the attachment of ing-rod.

The arms are secured to the upper bed 31 U by brackets and pins 30. Below this bed are other b'ed's'32 3334, thellower of which, 34, has four brackets 35, which engage with the projections 36 of the frames 1 and 2, by means of which it is supported. On the lowermost bed are projecting lugs 37, and on those above are lugs 38, 39, and 40, which fit into the slot 8 in the upright frames and so serve to guide thebeds. r

The beds below the uppermost 31 are raised by means of the jointed hooks 41 42, the upper ends of which engage with thelugs 40 of the. uppermost bed 31. As this bed is elevated the hooks 38 and 39 successivelyengage the lugs 38 and 39, formed on the edges of the lower beds, and so raise them. a

To prevent the upper hook 39 engaging withthe lug 38 of the bed wise be the case when in the loweredposition, a cam projection 43, Figs. 2 and 3, is feigned on the innerface of the upper bar 41, which when the beds are down bears against the lug 39 of the bed 32 and prevents the hook from. engaging the lug 38.

It is necessary for the proper operation of and; kept so, and for this purpose they are made hollow, and an internal circulation of steamis provided for.

On account of the beds being movable it is necessary that flexible connections between them be arranged, and to accomplishthis the swivel union 45, Fig. 6, may be employed. This union consists of the two sections 48 and 49, whichengage together and have a- The joint may be ground to a steam-tight fit. The section 49 is externally threaded to engage with a nut 50. The late ter has formed upon it a flange 51, which engages with a shoulder 48 on the member 48 and serves tohold the two parts together. Alock-nut 52 is-employed to keep the nut .50 frombecoming accidentally disengaged.

Suitable pipes .46 and 47 are screwed into either end of the steam-supply pipe 44, and being connected in the manner shown in Figs. 1 and gallows freedom of, movement of the bedsand still prevents the escape of steam. The beds are braced on the inside to properly withstand the steam-pressure by ties 49',

7 The sleeves 13; 13 carrying the thrust the frame independently of the shaft on which cast in the beds.

cocks 52. The beds may be adjusted for varying thickness of material by means of the screws 28.

arefor the purpose of of the worm directly to the worm is keyed. H

1 Theoperation of the machineis as follows: A belt drives the clutclrpulley 15 continuously. In starting the machine the clutch is an ad j u st- 33, as would othersaid frame between said, pillars,

The beds are drained by.

thrown into action by the operator grasping the handle 19, depressing it so that the lugs or stops 23 and 24 clear each other, and then drawingthe bar 19 toward himself. The worm 12 then drives the worm-wheel slowly but with great power,and the beds will be drawn up by the arms 26 2'7 and hooks 41 4-2. When atthejuppermo'st position, the lug 24-on the disk 10, Fig. 3, will engagethe lug 23 on the bar 19 andthrow the clutch out of action, thus stopping the machine. After-inserting the material to be pressed between the several beds the clutch is again engaged, the disks will be rotated,and the pins 25, having passed the centers, the bedswill be depressedand the material tightly compressed.

The necessity of an attendant always prepared to stop thenmachine atther'ight time is unnecessary,

While I have described and have shown. in the drawings a single pulley 15and a frictionclutoh 16 as means for operating this press, it is of course understood that any-other means maybe substituted-as, for instance, a fast and loose pulley may be used with a. beltshi'fter. The latter may be attached to and depend from the rod 19. t Y i Q Having now described my invention, what I claim as new therein, and desire to secure by Letters Patent, is as follows:

1. A chair-back-bending press, the combi-. nation with the frame therefor, a fixed bed' therein, a plurality of vertical movable-beds above said fixed bed, means for alternately raising and pressing down the uppermost of said beds to cause engagement of all of the other beds, said means comprising .a. shaft,

and means for imparting athrowthereby,

connections between said beds whereby when the uppermost of said beds is raisedthe other movable beds will be elevated-with sufificient separating intervals forthe introduction of the work, a continually-moving sourceof power, a clutch, means for. manually engagingand automatically disengaging. the same at the extremity of the downward throw. of the shaft sothat when the clutch is reengaged the further rotation of the shaftin the same direction raises the beds. V 1. i,

2. A chai-r-back-be ding press, thecombination with the frame therefor, vertical par allel side pillars thereupon, afixed'bedupon a plurality of vertical movable beds above said fixed bed,

means supported upon said pillars.for'alter nately raising andpressing 7 most of said beds to cause engagement of all. of the bedssaid means comprising ashaft, and means ,for imparting. V 'connections'between said beds wherebywhen theuppermost of said bedsisraisedthe other movable beds will be elevated with suific'ient. separating intervals for the introduction of the work, and a continually-moving source of power,

down the upper a throw thereby,

a clutch, means for manually engaging and automatically disengaging the same at the extremity of the downward throw of the shaft so that when the clutch is reengaged the further rotation of the shaft in the 7 same direction raises the beds.

3. A chair-back-bending press, the combination with the frame therefor, vertical parallel side pillars thereupon, a fixed bed upon said frame between said pillars, a plurality of vertical movable beds above said fixed bed, a shaft supported upon said pillars, means for imparting a throw by said shaft, pitmen connecting the uppermost of the said beds for alternately raising and pressing down the same to cause engagement of all of the beds, connections between said beds whereby when the uppermost of said beds is raised the other movable beds will be elevated with sufficient separating intervals'for the introduction of the work, and a continually-moving source of power, a clutch, means for manually engaging and automatically disengaging the same at the extremity of the downward throw of the shaft so that when the clutch is rengaged the further rotation of the crank-shaft in the same direction raises the beds, substantially as described.

4. In a chair-baek-bending press, the combination with the frame therefor, a fixed hollow bed therein ,a plurality of vertical hollow movable beds above said fixed bed, means for alternately raising and pressing down the uppermost of said beds to cause engagement of all of the other beds, said means comprising a shaft, and means for imparting a throw thereby, connections between said beds where by when the uppermost of said beds is raised the other movable beds will be elevated with sufficient separating intervals for the intro duction of the work a continually-moving source of power which can be manually engaged and means for automatically disengagin g it at the extremity of the downward throw of the shaft so that when the clutch is reengaged the further rotation of the shaft in the same direction raises the beds, a stationary source of steam-supply, and flexible connections between said steam-supply and the movable beds, substantially as described.

5. In a chair-back-bending press, a series of superimposed press-beds, having lugs or projections 37, 38, 39, 40, thereon, the hooks therefor formed of the two parts 41, 4:2, flexibly connected together, and the cam projection 43, carried by the part 41, for disengag ing the book from the lower beds until the uppermost bed is raised clear, substantially as described. i

.6. -In achair-back-bending press, the combination with the frame, a plurality of superimposed pressingbeds arranged therein, a horizontal shaft mounted in said frame above the pressing-beds, cranks. upon saidshaft, pitmen connecting said cranks with a the uppermost of said beds, a worm-wheel connected to the horizontal shaft, earns 24,, 24:, thereon, a clutch,a clutch-operating rod l9,a stop thereon, a supporting-spring 2O normally engaging said stop with said cam, and a handle 19 whereby the clutch may be manually operated. V

This specification signed and witnessed this 8th day of December, 1898.

FRANK HAYES. 

